{"id":"https://openalex.org/W4413844977","doi":"https://doi.org/10.14778/3734839.3734846","title":"SkyStore: Cost-Optimized Object Storage Across Regions and Clouds","display_name":"SkyStore: Cost-Optimized Object Storage Across Regions and Clouds","publication_year":2025,"publication_date":"2025-03-01","ids":{"openalex":"https://openalex.org/W4413844977","doi":"https://doi.org/10.14778/3734839.3734846"},"language":"en","primary_location":{"id":"doi:10.14778/3734839.3734846","is_oa":false,"landing_page_url":"https://doi.org/10.14778/3734839.3734846","pdf_url":null,"source":{"id":"https://openalex.org/S4210226185","display_name":"Proceedings of the VLDB Endowment","issn_l":"2150-8097","issn":["2150-8097"],"is_oa":false,"is_in_doaj":false,"is_core":true,"host_organization":"https://openalex.org/P4310319798","host_organization_name":"Association for Computing Machinery","host_organization_lineage":["https://openalex.org/P4310319798"],"host_organization_lineage_names":["Association for Computing Machinery"],"type":"journal"},"license":null,"license_id":null,"version":"publishedVersion","is_accepted":true,"is_published":true,"raw_source_name":"Proceedings of the VLDB Endowment","raw_type":"journal-article"},"type":"article","indexed_in":["crossref"],"open_access":{"is_oa":false,"oa_status":"closed","oa_url":null,"any_repository_has_fulltext":false},"authorships":[{"author_position":"first","author":{"id":"https://openalex.org/A5100653500","display_name":"Shu Liu","orcid":"https://orcid.org/0000-0002-3844-792X"},"institutions":[{"id":"https://openalex.org/I134446601","display_name":"Berkeley College","ror":"https://ror.org/02xewxa75","country_code":"US","type":"education","lineage":["https://openalex.org/I134446601"]},{"id":"https://openalex.org/I95457486","display_name":"University of California, Berkeley","ror":"https://ror.org/01an7q238","country_code":"US","type":"education","lineage":["https://openalex.org/I95457486"]}],"countries":["US"],"is_corresponding":true,"raw_author_name":"Shu Liu","raw_affiliation_strings":["UC Berkeley"],"raw_orcid":null,"affiliations":[{"raw_affiliation_string":"UC Berkeley","institution_ids":["https://openalex.org/I134446601","https://openalex.org/I95457486"]}]},{"author_position":"middle","author":{"id":"https://openalex.org/A5042410262","display_name":"Xiangxi Mo","orcid":null},"institutions":[{"id":"https://openalex.org/I134446601","display_name":"Berkeley College","ror":"https://ror.org/02xewxa75","country_code":"US","type":"education","lineage":["https://openalex.org/I134446601"]},{"id":"https://openalex.org/I95457486","display_name":"University of California, Berkeley","ror":"https://ror.org/01an7q238","country_code":"US","type":"education","lineage":["https://openalex.org/I95457486"]}],"countries":["US"],"is_corresponding":false,"raw_author_name":"Xiangxi Mo","raw_affiliation_strings":["UC Berkeley"],"raw_orcid":null,"affiliations":[{"raw_affiliation_string":"UC Berkeley","institution_ids":["https://openalex.org/I134446601","https://openalex.org/I95457486"]}]},{"author_position":"middle","author":{"id":"https://openalex.org/A5001422326","display_name":"Moshik Hershcovitch","orcid":"https://orcid.org/0000-0002-4826-4174"},"institutions":[],"countries":[],"is_corresponding":false,"raw_author_name":"Moshik Hershcovitch","raw_affiliation_strings":["IBM Research"],"raw_orcid":null,"affiliations":[{"raw_affiliation_string":"IBM Research","institution_ids":[]}]},{"author_position":"middle","author":{"id":null,"display_name":"Henric Zhang","orcid":null},"institutions":[{"id":"https://openalex.org/I134446601","display_name":"Berkeley College","ror":"https://ror.org/02xewxa75","country_code":"US","type":"education","lineage":["https://openalex.org/I134446601"]},{"id":"https://openalex.org/I95457486","display_name":"University of California, Berkeley","ror":"https://ror.org/01an7q238","country_code":"US","type":"education","lineage":["https://openalex.org/I95457486"]}],"countries":["US"],"is_corresponding":false,"raw_author_name":"Henric Zhang","raw_affiliation_strings":["UC Berkeley"],"raw_orcid":null,"affiliations":[{"raw_affiliation_string":"UC Berkeley","institution_ids":["https://openalex.org/I134446601","https://openalex.org/I95457486"]}]},{"author_position":"middle","author":{"id":"https://openalex.org/A5016074097","display_name":"Audrey Cheng","orcid":"https://orcid.org/0000-0002-3617-7268"},"institutions":[{"id":"https://openalex.org/I134446601","display_name":"Berkeley College","ror":"https://ror.org/02xewxa75","country_code":"US","type":"education","lineage":["https://openalex.org/I134446601"]},{"id":"https://openalex.org/I95457486","display_name":"University of California, Berkeley","ror":"https://ror.org/01an7q238","country_code":"US","type":"education","lineage":["https://openalex.org/I95457486"]}],"countries":["US"],"is_corresponding":false,"raw_author_name":"Audrey Cheng","raw_affiliation_strings":["UC Berkeley"],"raw_orcid":null,"affiliations":[{"raw_affiliation_string":"UC Berkeley","institution_ids":["https://openalex.org/I134446601","https://openalex.org/I95457486"]}]},{"author_position":"middle","author":{"id":"https://openalex.org/A5114653444","display_name":"Guy Girmonsky","orcid":null},"institutions":[],"countries":[],"is_corresponding":false,"raw_author_name":"Guy Girmonsky","raw_affiliation_strings":["IBM Research"],"raw_orcid":null,"affiliations":[{"raw_affiliation_string":"IBM Research","institution_ids":[]}]},{"author_position":"middle","author":{"id":"https://openalex.org/A5077710649","display_name":"Gil Vernik","orcid":"https://orcid.org/0009-0008-4236-5733"},"institutions":[],"countries":[],"is_corresponding":false,"raw_author_name":"Gil Vernik","raw_affiliation_strings":["IBM Research"],"raw_orcid":null,"affiliations":[{"raw_affiliation_string":"IBM Research","institution_ids":[]}]},{"author_position":"middle","author":{"id":"https://openalex.org/A5051485032","display_name":"Michael Factor","orcid":null},"institutions":[],"countries":[],"is_corresponding":false,"raw_author_name":"Michael Factor","raw_affiliation_strings":["IBM Research"],"raw_orcid":null,"affiliations":[{"raw_affiliation_string":"IBM Research","institution_ids":[]}]},{"author_position":"middle","author":{"id":"https://openalex.org/A5082125127","display_name":"Tiemo Bang","orcid":"https://orcid.org/0000-0003-0826-8645"},"institutions":[{"id":"https://openalex.org/I134446601","display_name":"Berkeley College","ror":"https://ror.org/02xewxa75","country_code":"US","type":"education","lineage":["https://openalex.org/I134446601"]},{"id":"https://openalex.org/I95457486","display_name":"University of California, Berkeley","ror":"https://ror.org/01an7q238","country_code":"US","type":"education","lineage":["https://openalex.org/I95457486"]}],"countries":["US"],"is_corresponding":false,"raw_author_name":"Tiemo Bang","raw_affiliation_strings":["UC Berkeley"],"raw_orcid":null,"affiliations":[{"raw_affiliation_string":"UC Berkeley","institution_ids":["https://openalex.org/I134446601","https://openalex.org/I95457486"]}]},{"author_position":"middle","author":{"id":"https://openalex.org/A5071385539","display_name":"Soujanya Ponnapalli","orcid":"https://orcid.org/0009-0006-1449-1447"},"institutions":[{"id":"https://openalex.org/I134446601","display_name":"Berkeley College","ror":"https://ror.org/02xewxa75","country_code":"US","type":"education","lineage":["https://openalex.org/I134446601"]},{"id":"https://openalex.org/I95457486","display_name":"University of California, Berkeley","ror":"https://ror.org/01an7q238","country_code":"US","type":"education","lineage":["https://openalex.org/I95457486"]}],"countries":["US"],"is_corresponding":false,"raw_author_name":"Soujanya Ponnapalli","raw_affiliation_strings":["UC Berkeley"],"raw_orcid":null,"affiliations":[{"raw_affiliation_string":"UC Berkeley","institution_ids":["https://openalex.org/I134446601","https://openalex.org/I95457486"]}]},{"author_position":"middle","author":{"id":"https://openalex.org/A5043986860","display_name":"Natacha Crooks","orcid":"https://orcid.org/0000-0002-3567-801X"},"institutions":[{"id":"https://openalex.org/I134446601","display_name":"Berkeley College","ror":"https://ror.org/02xewxa75","country_code":"US","type":"education","lineage":["https://openalex.org/I134446601"]},{"id":"https://openalex.org/I95457486","display_name":"University of California, Berkeley","ror":"https://ror.org/01an7q238","country_code":"US","type":"education","lineage":["https://openalex.org/I95457486"]}],"countries":["US"],"is_corresponding":false,"raw_author_name":"Natacha Crooks","raw_affiliation_strings":["UC Berkeley"],"raw_orcid":null,"affiliations":[{"raw_affiliation_string":"UC Berkeley","institution_ids":["https://openalex.org/I134446601","https://openalex.org/I95457486"]}]},{"author_position":"middle","author":{"id":"https://openalex.org/A5072427753","display_name":"Joseph E. Gonzalez","orcid":"https://orcid.org/0000-0003-2921-956X"},"institutions":[{"id":"https://openalex.org/I134446601","display_name":"Berkeley College","ror":"https://ror.org/02xewxa75","country_code":"US","type":"education","lineage":["https://openalex.org/I134446601"]},{"id":"https://openalex.org/I95457486","display_name":"University of California, Berkeley","ror":"https://ror.org/01an7q238","country_code":"US","type":"education","lineage":["https://openalex.org/I95457486"]}],"countries":["US"],"is_corresponding":false,"raw_author_name":"Joseph E. Gonzalez","raw_affiliation_strings":["UC Berkeley"],"raw_orcid":null,"affiliations":[{"raw_affiliation_string":"UC Berkeley","institution_ids":["https://openalex.org/I134446601","https://openalex.org/I95457486"]}]},{"author_position":"middle","author":{"id":"https://openalex.org/A5036936298","display_name":"Danny Harnik","orcid":"https://orcid.org/0009-0000-0614-6543"},"institutions":[],"countries":[],"is_corresponding":false,"raw_author_name":"Danny Harnik","raw_affiliation_strings":["IBM Research"],"raw_orcid":null,"affiliations":[{"raw_affiliation_string":"IBM Research","institution_ids":[]}]},{"author_position":"last","author":{"id":"https://openalex.org/A5041920173","display_name":"Ion Stoica","orcid":"https://orcid.org/0000-0002-5373-0088"},"institutions":[{"id":"https://openalex.org/I134446601","display_name":"Berkeley College","ror":"https://ror.org/02xewxa75","country_code":"US","type":"education","lineage":["https://openalex.org/I134446601"]},{"id":"https://openalex.org/I95457486","display_name":"University of California, Berkeley","ror":"https://ror.org/01an7q238","country_code":"US","type":"education","lineage":["https://openalex.org/I95457486"]}],"countries":["US"],"is_corresponding":false,"raw_author_name":"Ion Stoica","raw_affiliation_strings":["UC Berkeley"],"raw_orcid":null,"affiliations":[{"raw_affiliation_string":"UC Berkeley","institution_ids":["https://openalex.org/I134446601","https://openalex.org/I95457486"]}]}],"institutions":[],"countries_distinct_count":1,"institutions_distinct_count":14,"corresponding_author_ids":["https://openalex.org/A5100653500"],"corresponding_institution_ids":["https://openalex.org/I134446601","https://openalex.org/I95457486"],"apc_list":null,"apc_paid":null,"fwci":2.582,"has_fulltext":false,"cited_by_count":1,"citation_normalized_percentile":{"value":0.91619446,"is_in_top_1_percent":false,"is_in_top_10_percent":true},"cited_by_percentile_year":{"min":95,"max":98},"biblio":{"volume":"18","issue":"7","first_page":"2084","last_page":"2096"},"is_retracted":false,"is_paratext":false,"is_xpac":false,"primary_topic":{"id":"https://openalex.org/T10101","display_name":"Cloud Computing and Resource Management","score":0.9991000294685364,"subfield":{"id":"https://openalex.org/subfields/1710","display_name":"Information Systems"},"field":{"id":"https://openalex.org/fields/17","display_name":"Computer Science"},"domain":{"id":"https://openalex.org/domains/3","display_name":"Physical Sciences"}},"topics":[{"id":"https://openalex.org/T10101","display_name":"Cloud Computing and Resource Management","score":0.9991000294685364,"subfield":{"id":"https://openalex.org/subfields/1710","display_name":"Information Systems"},"field":{"id":"https://openalex.org/fields/17","display_name":"Computer Science"},"domain":{"id":"https://openalex.org/domains/3","display_name":"Physical Sciences"}},{"id":"https://openalex.org/T10273","display_name":"IoT and Edge/Fog Computing","score":0.9980999827384949,"subfield":{"id":"https://openalex.org/subfields/1705","display_name":"Computer Networks and Communications"},"field":{"id":"https://openalex.org/fields/17","display_name":"Computer Science"},"domain":{"id":"https://openalex.org/domains/3","display_name":"Physical Sciences"}},{"id":"https://openalex.org/T11478","display_name":"Caching and Content Delivery","score":0.9891999959945679,"subfield":{"id":"https://openalex.org/subfields/1705","display_name":"Computer Networks and Communications"},"field":{"id":"https://openalex.org/fields/17","display_name":"Computer Science"},"domain":{"id":"https://openalex.org/domains/3","display_name":"Physical Sciences"}}],"keywords":[{"id":"https://openalex.org/keywords/object","display_name":"Object (grammar)","score":0.65116947889328},{"id":"https://openalex.org/keywords/computer-science","display_name":"Computer science","score":0.5016906261444092},{"id":"https://openalex.org/keywords/object-storage","display_name":"Object storage","score":0.4478670656681061},{"id":"https://openalex.org/keywords/environmental-science","display_name":"Environmental science","score":0.4000089466571808},{"id":"https://openalex.org/keywords/computer-data-storage","display_name":"Computer data storage","score":0.28441643714904785},{"id":"https://openalex.org/keywords/artificial-intelligence","display_name":"Artificial intelligence","score":0.12583228945732117},{"id":"https://openalex.org/keywords/operating-system","display_name":"Operating system","score":0.11476728320121765}],"concepts":[{"id":"https://openalex.org/C2781238097","wikidata":"https://www.wikidata.org/wiki/Q175026","display_name":"Object (grammar)","level":2,"score":0.65116947889328},{"id":"https://openalex.org/C41008148","wikidata":"https://www.wikidata.org/wiki/Q21198","display_name":"Computer science","level":0,"score":0.5016906261444092},{"id":"https://openalex.org/C56640594","wikidata":"https://www.wikidata.org/wiki/Q7075068","display_name":"Object storage","level":3,"score":0.4478670656681061},{"id":"https://openalex.org/C39432304","wikidata":"https://www.wikidata.org/wiki/Q188847","display_name":"Environmental science","level":0,"score":0.4000089466571808},{"id":"https://openalex.org/C194739806","wikidata":"https://www.wikidata.org/wiki/Q66221","display_name":"Computer data storage","level":2,"score":0.28441643714904785},{"id":"https://openalex.org/C154945302","wikidata":"https://www.wikidata.org/wiki/Q11660","display_name":"Artificial intelligence","level":1,"score":0.12583228945732117},{"id":"https://openalex.org/C111919701","wikidata":"https://www.wikidata.org/wiki/Q9135","display_name":"Operating system","level":1,"score":0.11476728320121765}],"mesh":[],"locations_count":1,"locations":[{"id":"doi:10.14778/3734839.3734846","is_oa":false,"landing_page_url":"https://doi.org/10.14778/3734839.3734846","pdf_url":null,"source":{"id":"https://openalex.org/S4210226185","display_name":"Proceedings of the VLDB Endowment","issn_l":"2150-8097","issn":["2150-8097"],"is_oa":false,"is_in_doaj":false,"is_core":true,"host_organization":"https://openalex.org/P4310319798","host_organization_name":"Association for Computing Machinery","host_organization_lineage":["https://openalex.org/P4310319798"],"host_organization_lineage_names":["Association for Computing Machinery"],"type":"journal"},"license":null,"license_id":null,"version":"publishedVersion","is_accepted":true,"is_published":true,"raw_source_name":"Proceedings of the VLDB Endowment","raw_type":"journal-article"}],"best_oa_location":null,"sustainable_development_goals":[],"awards":[],"funders":[],"has_content":{"grobid_xml":false,"pdf":false},"content_urls":null,"referenced_works_count":12,"referenced_works":["https://openalex.org/W95608104","https://openalex.org/W1530342954","https://openalex.org/W1965253814","https://openalex.org/W1978382732","https://openalex.org/W1987225815","https://openalex.org/W2078432474","https://openalex.org/W2734941459","https://openalex.org/W2801544145","https://openalex.org/W2918350454","https://openalex.org/W4387634934","https://openalex.org/W4402953316","https://openalex.org/W4410919937"],"related_works":["https://openalex.org/W4391375266","https://openalex.org/W2899084033","https://openalex.org/W2748952813","https://openalex.org/W2390279801","https://openalex.org/W4391913857","https://openalex.org/W2358668433","https://openalex.org/W4396701345","https://openalex.org/W2134701567","https://openalex.org/W2610277969","https://openalex.org/W2154740417"],"abstract_inverted_index":{"Modern":[0],"applications":[1],"span":[2],"multiple":[3,118],"clouds":[4],"to":[5,29,59,68,111,138,161],"reduce":[6],"costs,":[7],"avoid":[8],"vendor":[9],"lock-in,":[10],"and":[11,41,47,79,101,108,134,166,178,181],"leverage":[12],"low-availability":[13],"resources":[14],"in":[15,62],"another":[16],"cloud.":[17],"However,":[18],"standard":[19,188],"object":[20,92,107],"stores":[21],"operate":[22],"within":[23],"a":[24,52,63,90,105,125],"single":[25],"cloud,":[26,65],"forcing":[27],"users":[28,55],"manually":[30],"manage":[31],"data":[32,97,128],"placement":[33,129],"across":[34,99,151],"clouds,":[35],"i.e.,":[36],"navigate":[37],"their":[38],"diverse":[39],"APIs":[40],"handle":[42],"heterogeneous":[43],"costs":[44],"for":[45,144],"network":[46,73],"storage.":[48],"This":[49],"is":[50],"often":[51],"complex":[53],"choice:":[54],"must":[56],"either":[57],"pay":[58,67],"store":[60,93],"objects":[61,136],"remote":[64],"or":[66],"transfer":[69],"them":[70],"over":[71,163],"the":[72,113,156],"based":[74],"on":[75,185],"application":[76,139],"access":[77,140],"patterns":[78,141],"cloud":[80,189],"provider":[81],"cost":[82,158],"offerings.":[83,190],"To":[84],"address":[85],"this,":[86],"we":[87],"present":[88],"SkyStore,":[89],"unified":[91],"that":[94,131,150],"addresses":[95],"cost-optimal":[96],"management":[98],"regions":[100],"clouds.":[102,119],"SkyStore":[103,123,154,173],"introduces":[104],"virtual":[106],"bucket":[109],"API":[110],"hide":[112],"complexity":[114],"of":[115],"interacting":[116],"with":[117,187],"At":[120],"its":[121,179],"core,":[122],"has":[124,175],"novel":[126],"TTL-based":[127],"policy":[130],"dynamically":[132],"replicates":[133],"evicts":[135],"according":[137],"while":[142],"optimizing":[143],"lower":[145],"cost.":[146],"Our":[147],"evaluation":[148],"shows":[149],"various":[152],"workloads,":[153],"reduces":[155],"overall":[157],"by":[159],"up":[160],"6X":[162],"academic":[164],"baselines":[165],"commercial":[167],"alternatives":[168],"like":[169],"AWS":[170],"multi-region":[171],"buckets.":[172],"also":[174],"comparable":[176],"latency,":[177],"availability":[180],"fault":[182],"tolerance":[183],"are":[184],"par":[186]},"counts_by_year":[{"year":2026,"cited_by_count":1}],"updated_date":"2026-05-21T09:19:25.381259","created_date":"2025-10-10T00:00:00"}
